Heater



April 29, 1941.

T. F. SPACKMAN HEA'rsR Filed Sept. 22, 1938 2,* S-heetS-She8t Patented Apr. 29, i941 I poehlsn, Chicago, lll., assigner to stewart-Wamel Mutation, Chicago, lll., a

Thomas F. S

corporation of Applicaties zz, ma, sei-m No. 231,232 z (ci. :sr- 131) 'Ihe present invention relates generally to heaters and the like, and more particularly to a combined mounting and air supply construction for heaters mounted upon partitions.

One of the objects of the invention is to provide an improved heater mounting for internal combustion heaters or the like.

- Another object of the invention is to provide an improved fresh air supply for automobile heaters.

Another object of the invention is to provide a combined unitary mounting and fresh air supply which requires the drilling of only one hole in the dash of an automobile or other or similar partitions.

Another object fof the Ainvention is to providea combined and improved fresh-air supply conduit construction and control therefor.

Another object of the invention is to pro'rvj'de a device of the class described, which is simple in construction and operation; thoroughlyleff fective in its use, and inexpensive to manufacture.

These being among the objects of the inveition, other and further oblects will become apparent from the drawings herein, the description relating thereto, and the appended claims'.

Referring' now to the drawings:

Fig. 1 is a side elevation partly in section, il-

lustrating a preferred form ofQthe combined mounting and fresh air supply constituting-the subject matter of the present invention;

Fig. 2 is a top plan partly in section, of construction illustrated in Fig. 1f;

had to the copendi'ng application of J.

28, 1936, for the structural characteristics of, wherein, briefly. air is drawn by the fan"i2 and motor Il into the fan compariment i2 of'the heater shell il through the intake opening, forced through the radiator 2i in heat exchnge relationship therewith, and driven'out iniothe interior of the passenger compartment through. the downwardly opening bell-shaped outlet 26. l The radiator 2l receives its heat from De N.' McCollum, Seal N0. 61,213, med January the fan I2 and motor il are supported immediately above the radiator 24 by a back plate 22.

The opening 2l is provided in the back plate 22 while the combustion chamber, the mixing chamber 22, and the outlet conduit 24 are all cast as an integral unit, which is secured to the back plate 22 inimion with the radiator 2| through Vs. second hole 22 in the back plate 22.

Considering the right. of the heater as shown in Figs. 1 and 2 as the back portion, a stamping 2l lssecuredto the back of theb'ack plate 22 and covers substantially the entire area thereof to providea housing with a rearward wall ll thereof'spaced from the back plate 22. A circular opening I2 is provided in the back wall Il and th`fdimens'ion-of this opening Yis substantially than the gross contour of the unit 23 wh'ereitpassesthroughtheopening, sothat the"cleaance thus provided between the margin of the opening I2 and the unit 23, aifords a passageway through which air may pass from outside 2l into the shell VI2 in heat `ex change relationship with theunit 32. In mounting the heater. an opening 44 is cut inthednshofthesamesizeas'theopening I2, the open end of a lcylinxlrically walledY cup inserted therethrough to a point where a circumferential upsetproviding an outwardly extending ilange il engages themetal sheathing v$2 locatedfthe engine side of the dash II.

The closed end Il of the cu'p member has stamped I6 and il therein'to receive theendportionsofthemixingchambern'and the exhaust conduit 2l when the cup member is installed. The exhaust conduit 24 is threaded to receive the nut and washer assembly 6l thereon which. when tightened, press against the closed end Il in cooperation with the flange 5l to press sameagainstthe dash and draw the heater into place against the passenger compartmet side oi' the dash with a suitable metal plate l2 located between the back wall 4l of the stamping and the dash Il. In this way the heiter is man; instance and held nrmiy in place.

opening 2l as more particularly shown in Figs.3111114,Ispl'olridedintliecylll'illllcalwull gases of comlnistion derived from a combustible Y mixturethatissnppliedbythecarmretorll ofthecupmemberrbetween the endwallll` thereofandtheiiangel|andthisopeningis coveredonthemtsidebyasheetmetalmember secnreduponbothsidesoftheopeningmslu weldingzindicatedat. 'lhememberiileads toasmrrceoffreshairthroughanintakeonduitllsothatfreshoirmbesppliedtothe and ignited in the combustion chamber 2l. and 55 heater from the intake conduit ll, through the 'through a transverse slot Il in the bottom of the sheet metal member It and through'the ing l.

A sleeve I2 is located upon the inside of the cup member, and an opening 'M is provided therein to coincide with the opening Il when in i one relative position, as rotated inside the cup 4I, and to close the opening varying degrees toV control' the amount oi fresh air from the conduit-1I. In order .to operate this cylindrical valve arrangement, a bar 'Il is secured to the 'sleeve 12E-and extends ,to a point within the connues of the stamping 36, where an arm 'Il is Open* on said cup member providing a shoulder abutting said wall around said wall opening; a stamping secured to said heater to provide a *housing over said inlet opening and having an threadedly secured thereto. The arm 1l extends;

stamping It and is provided with a handle 82 at the end thereof for manipulation so 'thatl movement of the handle I2 through an arc substantially in excess of 90 degrees will control the amount of 'fresh air entering into the fan an motor compartment II.

In event the fresh air supply is entirely shut oif by the cylindrical valve sleeve a substantial amount of air stili may be drawn through the slot, which is made of a suiiioient width not only A to prevent a rattling contact between the arm 'Il and the slot Il, but to admit enough air'from the interior of the passenger compartment to maintain adequate recirculation.

In this way the amount of fresh air supplied for passenger comfort may be controlled and is circulated over .the combustion unit in heat exchange relationship to be pre-warmed by heat which otherwise would be wasted. The prewarmed air is then circulated by the fan over the radiator out into the interior of the passenger compartment, and in this connection it will be noted that thel pre-warming of the fresh air makes it possible to substitute the fresh air for the recirculated air without .noticeable change with regard w the asume-alture.of` the aabeing supplied by the heater.

Moreover.V the combined mounting and fresh air supply provided for internal combusmanui'acture, and, although a single embodimenti*I of the invention hascbeen shown and described herein, it will be apparent tothose skilled l'in the art that various and further uses, modi- 'ilcations and changes maybe made without de opening in a wall thereof for receiving the open end of said cup member therethrough, whereby said'fstamping and said cup member are in open` 'communication' with each other for the n e oi 'air frcimone side of the wall to the other,

#means Qnaains. said one end of said unit and the tion heaters is simple in constructionand oper-'- 4 ation, eiiective in its use and inexpensive to closed end of said cup member for drawing' said stamping and said cup member towards each other on :opposite sides of said wall for supporting said heater on .said wall, said cup member having an openingadmitting said air, and manual means for .controlling the flow of said air through the last said opening.' l

2. In combination.. with a forced' circulation air heater mountable in an opening in a wall and having an airii'rlei;V opening andan independent combustion heat Vexchange unit, a cup member receivable in said 'wall opening and apertured at its closed end to receive one end of said unit therethrough with the cup opening towards the opposite end of said unit, a iiange on said cup member providing a shoulder abutting said wall around said wall opening, a stamping secured to said heater to provide a housing over said inlet opening and having an opening in a wall thereof for receiving the open end of said cup member therethrough, whereby said stamping and said cup member* are in open communication with each for the We 0i' air from one side of the to the other, means enains said one end of said unit and the closed endof said cup member for drawing said stamping and said cup member towards each other. on opposite sides of said wall for-supporting said heateron said wall, said cup member having an opening admitting said air, and said ltampins having an elongated openingtoadmitairtosaidinletopeningfrom the same side of -said wall, and cylindrical valve means-` accessible through said elongated open,

ing for controllingzthe flow of air through said opening in the cup member. a

t THOMAS F. BPACKMAN. 

